Exam 350-601 topic 1 question 186 discussion

All traffic is stopped for the duration of the EPLD update, and the switch is rebooted after the upgrade is completed. Explanation: An EPLD update on the supervisor module of Cisco MDS 9000 Series Switches is a disruptive process that affects both control and data plane operations. Traffic Disruption: During the EPLD update, all traffic—both control plane (management and protocol operations) and data plane (data forwarding)—is halted. Switch Reboot: After the EPLD update is completed, the switch undergoes a reboot to apply the changes effectively.

DDDDDDDDDDDDDDDD

Official Cert Guide Book p503 " NOTE An EPLD update of the supervisor module of fabric switches (Cisco MDS 9100, Cisco MDS 9200, and Cisco MDS 9300 Series switches) is disruptive because there is no redundant supervisor to take over while the update is in progress. All traffic through the system is stopped for the duration of the update, and the switch is rebooted after the upgrade has completed. The update may take up to 30 minutes to complete. "

I will chose A

For me answer is D. https://www.cisco.com/c/en/us/td/docs/switches/datacenter/mds9000/sw/6_2/release/notes/epld/epld_rn.html#62980

I would answer A. Question mentions 9000 Séries “Switches”, not “Directors”. Also, even with a redundant sup, you need to upgrade the standby from the active, then failover and upgrade the other sup. The supervisor does not “take overl by itself.

This is very tricky question. There is no informations if the MDS switches are 9100/9200/9300 or 9500/9700. If MDS9100/9200/9300 then the answer is A (because there is no redundant supervisor module),. But if it is about MDS9500/9700 then the correct answer is D(because they have redundant supervisor)

I think it is D. The question doesn't define the exact switch type. It *is* disruptive for MDS 91/92/93xx series switches, which don't have standby supervisors, but for director switches, the upgrade is non-disruptive if the standby supervisor is upgraded first. The answers seem to imply that we have switches with a standby supervisor units. https://www.cisco.com/c/en/us/td/docs/switches/datacenter/mds9000/sw/8_x/release_notes/epld/epld_rn_8x.html#pgfId-314100

An EPLD update of the supervisor module of Fabric Switches (Cisco MDS 9100, Cisco MDS 9200, and Cisco MDS 9300 Series switches) is disruptive since there is no redundant supervisor to take over while the update is in progress. All traffic through the system is stopped while updating and the switch is power cycled after the upgrade has completed. The update may take up to 30 minutes to complete.